多元协同萃取的研究 Ⅲ.AAB类三元体系对Nd(Ⅲ)的协同萃取  

STUDIES OF POLYNARY SYSTEM SYNERGISTIC EXTRACTIONIII. SYNERGISTIC EXTRATION OF NEODYMIUM (III) BY THE TERNARY SYSTEM OF AAB SPECIES

作　　者：赵弘颖[1] 陈金榜[2] 

机构地区：[1]北京林业大学基础部,北京100088 [2]北京大学技术物理系,北京100871

出　　处：《无机化学学报》1990年第1期10-16,共7页Chinese Journal of Inorganic Chemistry

摘　　要：本文对1-苯基-3-甲基-4-乙酰基吡唑啉酮-5(PMHP文中用HA表示)和2-噻吩甲酰三氟丙酮(TTA用HT表示)与甲基膦酸二异戊酯(DiAMP用B表示)和二戊基亚砜(DASO用S表示)这几种萃取剂的甲苯溶液构成的两组AAB类三元体系,从高氯酸底液中萃取轻稀土元素Nd(Ⅲ)的协萃机理进行了研究。用斜率法测定了Nd^(3+)(≤10^(-4)mol·1^(-1)/NaClO_4(μ=0.1)/PMHP-TTA-DiAMP-C_6H_5CH_3体系的三元协萃物组成分别为NdAT_2·B和NdAT_2·B_2,体系平衡常数分别为K_(ATB)_1=7.0×10^(-2),K_(ATB)_2=20.9(25℃)。同时测定了Nd^(3+)(≤10^(-4)mol·1^(-1)/NaClO_4,HClO_4(μ=0.1)/PMHP-TTA-DASO-C_6H_5CH_3体系协萃物分别为NdA_2T·S和NdA_2T·S_2,测定的平衡常数平均值分别为K_(ATS)_1=5.2×10^(-2),K_(ATS)_2=2.8(25℃,平均值)。In this paper, two groups of the synergistic extraction of Neodymium (Ⅲ) with ternary system of AAB species are studied. The method is slop analysis. Nd3+(≤10-4mol·1-1) / NaClO4, HClO4(μ= 0.1)/PMHP-TTA-DiAMP-C6H5CH3 system, there are two adduct complexes in this system: NdAT2B and NdAT2B2, the equilibrium constants are determined to be KATB = 7.0×10-2and KATB2 = 20.9(25℃). Nd3+(≤10-4mol·1-1/ NaClO4, HClO4(μ= 0.1)/ PMHP-TTA-DASO-C6H3CH3 system, there are two adduct complexes too:NdA2TS and NdA2TS2, the equilibrium constants are determined to be KATS1 =5.2×10-2(25℃), KATS2 =2.8(25℃). The results of the extraction have been discussed.

关 键 词：钕 协同萃取 AAB三元体系 

分 类 号：O614.335[理学—无机化学]